564441615 has 24 divisors (see below), whose sum is σ = 1014603408. Its totient is φ = 301034880.

The previous prime is 564441611. The next prime is 564441733. The reversal of 564441615 is 516144465.

564441615 is a `hidden beast` number, since 5 + 644 + 4 + 1 + 6 + 1 + 5 = 666.

It is not a de Polignac number, because 564441615 - 2² = 564441611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 564441615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564441611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231066 + ... + 233495.

It is an arithmetic number, because the mean of its divisors is an integer number (42275142).

Almost surely, 2^564441615 is an apocalyptic number.

564441615 is a deficient number, since it is larger than the sum of its proper divisors (450161793).

564441615 is an equidigital number, since it uses as much as digits as its factorization.

564441615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464581 (or 464569 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 564441615 is about 23757.9800277717. The cubic root of 564441615 is about 826.4305098674.

The spelling of 564441615 in words is "five hundred sixty-four million, four hundred forty-one thousand, six hundred fifteen".